气候变化领域集成服务门户(CCPortal): Impact of biogenic secondary organic aerosol (SOA) loading on the molecular composition of wintertime PM2.5 in urban Tianjin: an insight from Fourier transform ion cyclotron resonance mass spectrometry

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DOI	10.5194/acp-23-2061-2023
	Impact of biogenic secondary organic aerosol (SOA) loading on the molecular composition of wintertime PM2.5 in urban Tianjin: an insight from Fourier transform ion cyclotron resonance mass spectrometry
	Zhong, Shujun; Chen, Shuang; Deng, Junjun; Fan, Yanbing; Zhang, Qiang; Xie, Qiaorong; Qi, Yulin; Hu, Wei; Wu, Libin; Li, Xiaodong; Pavuluri, Chandra Mouli; Zhu, Jialei; Wang, Xin; Liu, Di; Pan, Xiaole; Sun, Yele; Wang, Zifa; Xu, Yisheng; Tong, Haijie; Su, Hang; Cheng, Yafang; Kawamura, Kimitaka; Fu, Pingqing
发表日期	2023
ISSN	1680-7316
EISSN	1680-7324
起始页码	2061
结束页码	2077
卷号	23 期号:3 页码:17
英文摘要	Biomass burning is one of the key sources of urban aerosols in the North China Plain, especially during winter, when the impact of secondary organic aerosols (SOAs) formed from biogenic volatile organic compounds (BVOCs) is generally considered to be minor. However, little is known about the influence of biogenic SOA loading on the molecular composition of wintertime organic aerosols. Here, we investigated the water-soluble organic compounds in fine particulate matter (PM2.5) from urban Tianjin by ultrahigh-resolution Fourier transform ion cyclotron resonanc mass spectrometry (FT-ICR MS). Our results show that most of the CHO and CHON compounds are derived from biomass burning which are poor in oxygen and contain aromatic rings that probably contribute to light-absorbing brown carbon (BrC) chromophores. Under moderate to high SOA-loading conditions, the nocturnal chemistry is more efficient than photooxidation to generate secondary CHO and CHON compounds with high oxygen content. Under low SOA loading, secondary CHO and CHON compounds with low oxygen content are mainly formed by photochemistry. Secondary CHO compounds are mainly derived from oxidation of monoterpenes. However, nocturnal chemistry may be more productive to sesquiterpene-derived CHON compounds. In contrast, the number- and intensity-weight of S-containing groups (CHOS and CHONS) increased significantly with the increase of biogenic SOA loading, which agrees with the fact that a majority of the S-containing groups are identified as organosulfates (OSs) and nitrooxy-organosulfates (nitrooxy-OSs) that are derived from the oxidation of BVOCs. Terpenes may be potential major contributors to organosulfates and nitrooxy-organosulfates. While the nocturnal chemistry is more beneficial to the formation of organosulfates and nitrooxy-organosulfates under low SOA loading. The SOA loading is an important factor that is associated with the oxidation degree, nitrate group content and chemodiversity of nitrooxy-organosulfates. Furthermore, our study suggests that the hydrolysis of nitrooxy-organosulfates is a possible pathway for the formation of organosulfates.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000934954600001
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/273215
作者单位	Tianjin University; Chinese Academy of Sciences; Institute of Atmospheric Physics, CAS; Chinese Research Academy of Environmental Sciences; Max Planck Society; Chubu University
推荐引用方式 GB/T 7714	Zhong, Shujun,Chen, Shuang,Deng, Junjun,et al. Impact of biogenic secondary organic aerosol (SOA) loading on the molecular composition of wintertime PM2.5 in urban Tianjin: an insight from Fourier transform ion cyclotron resonance mass spectrometry[J],2023,23(3):17.
APA	Zhong, Shujun.,Chen, Shuang.,Deng, Junjun.,Fan, Yanbing.,Zhang, Qiang.,...&Fu, Pingqing.(2023).Impact of biogenic secondary organic aerosol (SOA) loading on the molecular composition of wintertime PM2.5 in urban Tianjin: an insight from Fourier transform ion cyclotron resonance mass spectrometry.ATMOSPHERIC CHEMISTRY AND PHYSICS,23(3),17.
MLA	Zhong, Shujun,et al."Impact of biogenic secondary organic aerosol (SOA) loading on the molecular composition of wintertime PM2.5 in urban Tianjin: an insight from Fourier transform ion cyclotron resonance mass spectrometry".ATMOSPHERIC CHEMISTRY AND PHYSICS 23.3(2023):17.